Dispenser



o. B. 'CLARK' May 2, 4193.9.

DISPENSER Filed May 24, 195'? v INVENToR. 677-720 B. CLARK Vm CMI? sl MATTORNEYS.

Patented May 2, 1939 UNITED iSTATES PATENT OFFICE l' DISPENSER ottoclark, chicago, 111., assigner to The Lubrication Corporation, Chicago,Ill., a corporation of Delaware Application May 24, 1937, Serial No.144,437 8 Claims. (Cl. 221-85) This invention relates to dispensers andmore particularly to devices for dispensing the contents of factory-lledsealed containers.

One of the objects of the invention is to provide a dispenser which willdischarge the contents of a container positively and rapidly.

Another object of the invention is to provide a dispenser which willdischarge the contents of a container without placing the containeritself 10 under pressure.

Still another object is to provide a dispenser in which an outletopening is cut in a sealed container as the container is clamped to thedispenser. Preferably the clamping action also forms an air vent in thecontainer opposite the outlet opening.

Other objects, advantages and novel features of the invention will beapparent from the following'description of the embodiments vshown in theaccompanying drawing, in which:

Figure 1 is a central section with parts in elevation of a dispenserembodying the invention, and

Figure 2 is a partial View" similar to Figure 1 showing a modiedconstruction.

The dispenser of Figure 1 comprises a cylinder 4 in which a piston 6 isslidably mounted, the piston being packed to form a fluid tight sealwith the cylinder wall and being formed with a central opening. Adischarge tube 8 is secured to the piston in communication with theopening and extends through a head Ill which is secured to one end ofthe cylinder, .a packing l2 forming a fluid tight seal between the headand discharge tube. An outwardly opening check valve I4 is preferablyprovided to control communication between the discharge tube and thespace below the piston.

The piston is adapted to be forced -down through the cylinder bycompressed air or the like admitted into the head I8 past a valve I6con-v trolled by a suitable trigger I8.v The compressed air is suppliedthrough a hose 28 from any suitable source such as the usual compressoror storage tank.

The opposite end of the cylinder 4 is closed by a cap 22 formed with aninlet passage 24 controlled by an inwardly opening check valve 26. Thepassage 24 terminates in an annular knife ,50 28.paralleling thecylinder and pointing in the direction of the head I8 for forming anoutlet opening in a sealed container or can indicated at 38 and whichmay be a sealed tin can of the .general type in which vegetables aremarketed. A yielding gasket 32 is secured around the knife 28 to form aseal with the container 30 around the outlet opening therein.

In order to pressA the container against the knife 28, a collar 34 isslidably mounted on the cylinder 4 and carries a hollow knife 36 to form5 a Vent opening in the container opposite the outlet opening. Thecollar 34 is operated by a bell crank lever 38 pivoted at its center ona collar 48 which is adjustably locked to the cylinder 4 vby a set screw42. A link 44 connects the lever 10 38 to the collar 34- so that as th`elever 38 is swung about its pivot the collar 34 will be moved.

In use, the collar 48 is adjusted to the proper position according tothe size can whose contents are to be dispensed and the lever 38 isswung 15 counterclockwise to raise the collar 3 4. A can 30 may then beplaced adjacent the cylinder 4 with its lopposite ends in register withthe knives 28 and 36 and the lever 38 may be moved to the positionshown. This forces the knives through 20 the ends of the can formingoutlet and vent openings therein and clamping the can to the cylinder.As soon as the can is clamped to the cylinder as shownthe contentsthereof will start to iiow 25 by gravity into the cylinder. However, inorder. to speed up the flow and to insure complete emptying of the can,the piston 6' is preferably forced tothe bottom of the cylinder byadmitting compressed air into the head l0, air in the cylinder 30 beingdisplaced out the discharge tube. When the air pressure is relieved, thepiston will rise under theinfluence of a compression spring 46 and willsuck the contents of the can into the cylinder. Upon readmittingcompressed air to 35 the head I0 the piston will again be forced down todisplace the lubricant or other material through the discharge tube. Ifa container is used which is larger than the cylinder several pistonstrokes may be required to dispense its 40 contents or. if severalcontainers are to'be dispensed in succession a new one may be secured tothe pump while the contents of the last container are still in the pumpcylinder.

Since the containers are not confined there is 45 no limit to thediameter ofl a container which can be used with the dispenser andcontainers of different axial lengths can be used by adjusting thecollar 40. l Figure 2 illustrates a modified construction, 50 partstherein corresponding to like parts in Figure 1 being indicated by thesame reference numerals plusy 100. In this construction the dischargetube l88 is provided with an extension |09 rigidly secured to the headH0 and project- .55

' sion |09 andis provided with suitable packing to form a sealtherewith.

In operation a down stroke of the piston will displace any material inthe cylinder |04 out through the discharge tube, the return stroke ofthe piston under the innuence of spring |46 sucking material in throughthe passage |24 past Vthe disc-type check valve |26.

While two embodiments'of. the invention have been shown and described,it will be apparent that many changes might be made therein and it isnot intended to limit the scope of the invention to the embodimentsshown nor otherwise than by the terms of the appended claims.

What is claimed is:

l. A dispenser for lubricant or vthe like comprising a cylinder, apiston slidably mounted in said cylinder and having an `openingtherethrough, a discharge tube communicating with one end of thecylinder through said-opening, means connected to the cylinder at oneside of the piston for communication with a container for lubricant orthe like, and means for admitting iluid under pressure to the cylinderat the other side of the piston to move the piston through the cylinder,thereby to force the contents of the container out throughthe dischargetube.

2., A dispenser for lubricant or the like comprising a cylinder, apiston slidably mounted in said cylinder and having an openingtherethrough, a discharge tube communicating with one end of thecylinder through said opening, a cutter carried by one end of thecylinder for cutting an outlet opening in a sealed container toestablish communication of the cylinder therewith, and means foradmitting fluid under pressure to the cylinder at the other side of thepiston to move the Ypiston through the cylinder, thereby to force thecontents of the container out through the discharge tube.

3. A dispenser for lubricant orfthe like comprising a cylinder, a pistonlslidably mounted in said cylinder and having an opening therethrough, adischarge tube communicating with one end of the cylinder through saidopening, a hollow knife communicating' with said end of the cylinder,and rigidly carried by the cylinder, and means carried by the cylinderfor pressing a sealed container against the knife to form an outletopening in the container communicating with the knife.

4. A dispenser for lubricant or the'like comprising a cylinder, a pistonslidably mounted in said cylinder and having an opening therethrough, adischarge tube communicating with one end of the cylinder through saidopening, a hollow knife communicating with said end of the cylinder, andrigidly carried by the cylinder, and means carried by the cylinder forpressing a sealed container against the knife to form an outlet openingin the container communicating with the knife, said means including acutter to form a vent opening in the container opposite said a partslidably mounted on the pump and movable toward and away from thecutter, and a lever for moving said part.

6. A dispenser for lubricant or the like comprising an elongated pump, acutter carried by and communicating with one end of the pump for'formingan outlet opening in a sealed container, a member slidably carried bythe pump and movable toward and away from said cutter, a second memberadjustably mounted on the pump, and a lever connecting said members andoperable to move the rst named member toward and away from the cuttertofpress a sealed container against the cutter and to clamp it in place.

7. A dispenser for lubricant or the like comprising an elongated pump, acutter carried by one end of the pump for forming an outlet opening in asealed container, a member slidably carried by the pump and movabletoward and away from said cutter, a second member adjustably mounted onthe pump, a lever connecting said members and operable to move the firstnamed'member, and a cutter carried by said iirst named member lto form avent 'opening in the container opposite the outlet opening.

8. A dispenser comprising a cylinder, a piston slidable in the cylinderand formed with an opening therethrough, means for supplying material tobe dispensed toene end-of the cylinder,

-a discharge tube extending through .the other end of the cylinderandcommunicating with said one end of the cylinder through the opening inthe piston, means for urging the piston toward said other end of thecylinder and means for admitting uid under pressure to said other end ofthe cylinder to force the piston through the cylinder.

O'I'IO B. CLARK.

